NDLI: Dynamics and wear of fragments of a lower part of a fuel assembly with free fuel elements

Content Provider	Springer Nature Link
Author	Drozdov, Yu. N. Makarov, V. V. Afanas’ev, A. V. Matvienko, I. V. Osipova, E. P. Puchkov, V. N.
Copyright Year	2011
Abstract	A procedure and findings of investigations of the dynamic characteristics and the wear of fuel elements in the framework of the development of a perspective design of fuel elements without fastening in a lower support grid are presented. At the first phase of the work, natural vibration frequencies and the dynamic rigidity of fuel elements are determined in various design variants of lower spans. Resonance frequencies of spans of fuel elements are revealed by minimums of the dynamic rigidity. At the second phase, investigations of vibrational wear within contact of fuel elements with cells of spacer grids are performed on models of a lower part of a fuel assembly. Four embodiments of the lower part of the fuel assembly are investigated. As a result of the application of high vibrational loads, the wear of fuel element cans and grid cells is observed in more than a half of contact assembles of fuel elements with spacer grids. The most and least wear-resistant designs of the lower part of the fuel assembly are determined by results of tests.
Starting Page	242
Ending Page	246
Page Count	5
File Format	PDF
ISSN	10526188
Journal	Journal of Machinery Manufacture and Reliability
Volume Number	40
Issue Number	3
e-ISSN	19349394
Language	English
Publisher	Allerton Press, Inc.
Publisher Date	2011-06-17
Publisher Place	Heidelberg
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Manufacturing, Machines, Tools
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Mechanical Engineering Safety, Risk, Reliability and Quality

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